Arnaud Perrot, Damien Rangeard, Yannick Melinge, Patrice Estelle, Christophe Lanos
Extrusion criterion for firm cement-based materials
Appl. Rheol. 19:5 (2009) 53042 (7 pages)

Abstract: The stability of the flow induced by the extrusion forming process of a cement based material is largely influenced by the relative migration between the lubricating liquid phase and the granular skeleton. In the present work,we propose linking rheological concepts and soil mechanics (consolidation theory, Darcy's law) to reach a simple criterion which predicts the extrusion ability of a mortar. Extrusion tests on studied mortar are performed at different ram velocities for criterion validation. © 2009 Applied Rheology.

DOI 10.3933/ApplRheol-19-53042

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